Re: [PATCH] debug: fix BUILD_BUG_ON() for non-constant expressions

[Rusty Russell]

On Wednesday 20 August 2008 02:33:59 Boaz Harrosh wrote:
> If the user of virtio_has_feature() must pass a compile-time constant then
> it must be converted to a MACRO, and then the BUILD_BUG_ON will work.
> Or it should be changed to a BUG_ON() if fbit is a runtime variable.

I was (ab)using the current slackness of BUILD_BUG_ON() to be a noop on 
non-constants.  We can replace with a BUG_ON if we fix BUILD_BUG_ON() to 
insist on a compile-time constant; I think that's still an overall win.

Cheers,
Rusty.
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